diff --git a/test/test_FunCommands.py b/test/test_FunCommands.py
index 317a38e7a..8c8a40a3d 100644
--- a/test/test_FunCommands.py
+++ b/test/test_FunCommands.py
@@ -39,5 +39,5 @@ class FunCommandsTest(PluginTestCase):
         self.assertResponse('binary A', '01000001')
 
     def testRot13(self):
-        for s in nicks:
+        for s in nicks[:10]: # 10 is probably enough.
             self.assertResponse('rot13 [rot13 %s]' % s, s)